datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,28 ,0.001743,736.4887,94.17442,200.8946
sgpcmbeC1.c1,2007,02 1:30:00,28 ,       0,804.9137,75.60227,174.6473
sgpcmbeC1.c1,2007,02 2:30:00,28 ,       0, 409.275,64.98169,119.9977
sgpcmbeC1.c1,2007,02 3:30:00,28 ,       0,290.9322,52.62292,93.68786
sgpcmbeC1.c1,2007,02 4:30:00,28 ,       0,341.8784, 51.6491,98.60201
sgpcmbeC1.c1,2007,02 5:30:00,28 ,       0,692.4897,55.17562,140.5555
sgpcmbeC1.c1,2007,02 6:30:00,28 ,       0,    1017,62.02592,194.9703
sgpcmbeC1.c1,2007,02 7:30:00,28 ,       0,339.7814,40.99522,81.76739
sgpcmbeC1.c1,2007,02 8:30:00,28 ,       0,254.4703,47.71755,84.59624
sgpcmbeC1.c1,2007,02 9:30:00,28 ,       0,279.8289,43.70214,84.54927
sgpcmbeC1.c1,2007,0210:30:00,28 ,       0,464.7296,43.86983, 101.291
sgpcmbeC1.c1,2007,0211:30:00,28 ,       0,560.2747,43.00072,113.6677
sgpcmbeC1.c1,2007,0212:30:00,28 ,       0,201.0859,28.92749,58.76925
sgpcmbeC1.c1,2007,0213:30:00,28 ,0.003897, 487.847,38.51561,99.66619
sgpcmbeC1.c1,2007,0214:30:00,28 ,0.013851,1079.402, 64.2554,206.2135
sgpcmbeC1.c1,2007,0215:30:00,27 ,0.009992,511.2463,45.61888,108.0978
sgpcmbeC1.c1,2007,0216:30:00,28 ,       0,382.3355,43.45101, 88.9052
sgpcmbeC1.c1,2007,0217:30:00,28 ,0.052976,480.0674,60.73605,119.1855
sgpcmbeC1.c1,2007,0218:30:00,28 ,0.097088,455.8426,60.21607,109.8461
sgpcmbeC1.c1,2007,0219:30:00,28 ,0.038838,496.9441,60.61759,118.2068
sgpcmbeC1.c1,2007,0220:30:00,28 ,0.005379,588.2199,65.52241,138.9722
sgpcmbeC1.c1,2007,0221:30:00,28 ,       0,534.9935,54.92084,119.5661
sgpcmbeC1.c1,2007,0222:30:00,28 ,       0,562.1002,58.21826, 129.881
sgpcmbeC1.c1,2007,0223:30:00,28 ,0.001037,703.3635,83.30047,173.4151